What are the four types of fossils?

The Four Types of Fossils By Rebecca Epstein; Updated May 09, 2018 Fossils are the foundation for scientists’ understanding of the history of Earth and all life on it. read more

The four types of fossils are: mold fossils (a fossilized impression made in the substrate - a negative image of the organism) cast fossils (formed when a mold is filled in) trace fossils = ichnofossils (fossilized nests, gastroliths, burrows, footprints, etc.) true form fossils (fossils of the actual animal or animal part). read more

There are four types of fossils: mold fossils, cast fossils, trace fossils and true form fossils. Fossils are divided into two distinct categories: fossilized body parts, such as teeth, claws, bones and embryos, and fossilized traces, including nests, tooth marks, droppings and footprints. read more